/*
 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation. Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 */
package com.nulldev.util.graphics.renderIt.ginterfaces.marlin.impl.pisces;

/**
 * DPQS Sorter context
 */
final class DPQSSorterContext {

	static final boolean LOG_ALLOC = false;
	@SuppressWarnings("unused")
	static final boolean CHECK_ALLOC = false && LOG_ALLOC;

	/**
	 * Max capacity of the index array for tracking runs.
	 */
	static final int MAX_RUN_CAPACITY = DualPivotQuicksort20191112Ext.MAX_RUN_CAPACITY;

	/* members */
	final int[] run;
	int[] auxA;
	int[] auxB;
	boolean runInit;

	DPQSSorterContext() {
		// preallocate max runs:
		if (LOG_ALLOC) {
			MarlinUtils.logInfo("alloc run: " + MAX_RUN_CAPACITY);
		}
		run = new int[MAX_RUN_CAPACITY];
	}

	@SuppressWarnings("unused")
	void initBuffers(final int length, final int[] a, final int[] b) {
		auxA = a;
		if (CHECK_ALLOC && (a.length < length)) {
			if (LOG_ALLOC) {
				MarlinUtils.logInfo("alloc auxA: " + length);
			}
			auxA = new int[length];
		}
		auxB = b;
		if (CHECK_ALLOC && (b.length < length)) {
			if (LOG_ALLOC) {
				MarlinUtils.logInfo("alloc auxB: " + length);
			}
			auxB = new int[length];
		}
		runInit = true;
	}

}
